天敌昆虫耐冷藏力研究进展

低温冷藏是延长天敌昆虫货架期的有效方法之一.昆虫的存活率、生殖力、田间寄生(捕食)力等是评估天敌昆虫耐冷藏力的重要指标.昆虫耐冷藏力受冷藏前、冷藏中和冷藏后的各种外源(非生物)因子和内源(生物)因子的影响.这些因子主要包括温度、湿度、光周期、氧浓度、冷藏持续时间、冷藏前的预处理、冷藏过程中的温度处理(混合低温)等外源因子和虫体能量物质的储备、繁殖方式、年龄/龄期、滞育(休眠)状态、营养等内源因子.本文对影响天敌昆虫耐冷藏性的内源因子和外源因子的种类以及产生这些影响的生理学机制等进行了综述,以期为天敌昆虫低温储藏技术研究和生产方案的制定提供依据.

Research progress on cold storage tolerance of natural enemy insects

Cold storage is considered to be one of the most effective means of prolonging the shelf life of natural enemy insects. The survival rate, fecundity, and field parasitic (predation) ability are important indexes to evaluate the cold storage tolerance of natural enemy insects. The cold storage tolerance of insects is affected by various factors before, during, and after cold storage. These factors mainly include exogenous (abiotic) factors such as temperature, humidity, photoperiod, oxygen concentration, duration of cold storage, pretreatment before cold storage, temperature treatment during cold storage (mixed low temperature), and endogenous (biological) factors such as energy storage, reproduction mode, age, diapause (dormancy), diet nutrition and so on. In this paper, the types of endogenous and exogenous factors affecting cold storage tolerance of natural enemy insects and the physiological mechanisms of these effects were reviewed. We expected to provide a basis for the research of low-temperature storage technology and production plan of natural enemy insects.